diff --git a/debian/resources/nginx/fusionpbx b/debian/resources/nginx/fusionpbx
index 2da9ac7..725ad0b 100644
--- a/debian/resources/nginx/fusionpbx
+++ b/debian/resources/nginx/fusionpbx
@@ -118,7 +118,7 @@ server {
 	ssl_certificate         /etc/ssl/certs/nginx.crt;
 	ssl_certificate_key     /etc/ssl/private/nginx.key;
 	ssl_protocols           TLSv1 TLSv1.1 TLSv1.2;
-	ssl_ciphers             HIGH:!ADH:!MD5;
+	ssl_ciphers             HIGH:!ADH:!MD5:!aNULL;
 
 	#REST api
 	if ($uri ~* ^.*/api/.*$) {